# Rectangular glass area – 24 square dm. Glass length – 6 dm. Find the perimeter of the glass.

December 27, 2020 | education

| The area of the rectangle is calculated by the formula:

S = a * b.

Determine the width of rectangular glass, provided that S = 24 dm², a = 6 dm (to find the second factor, divide the product by the first):

b = S: a = 24: 6 = 4 dm.

The perimeter is the sum of all sides. For such a figure, it is determined by the formula:

P = 2a + 2b = 2 * 6 + 2 * 4 = 12 + 8 = 20 dm.

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